Invention Grant
- Patent Title: Planar inductive component and a planar transformer
- Patent Title (中): 平面感应元件和平面变压器
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Application No.: US10485906Application Date: 2002-08-07
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Publication No.: US07671714B2Publication Date: 2010-03-02
- Inventor: Lukas Frederik Tiemeijer
- Applicant: Lukas Frederik Tiemeijer
- Applicant Address: NL Eindhoven
- Assignee: NXP B.V.
- Current Assignee: NXP B.V.
- Current Assignee Address: NL Eindhoven
- Priority: EP01203050 20010809
- International Application: PCT/IB02/03282 WO 20020807
- International Announcement: WO03/015110 WO 20030220
- Main IPC: H01F5/00
- IPC: H01F5/00

Abstract:
The invention relates to a planar inductive component (11) comprising at least a first and a second concentric inductor, which include a first and a second spiral pattern (12A, 12B), respectively. Both spiral patterns have a first end point (13A, 13B) and a second end point (14A, 14B), are electrically interconnected, interlaced, and interrupted at the outer side, and provided with two contacts (16A, 16B) on one side of the opening (15A, 15B) and two contacts (17A, 17B) on the other side of the opening (15A, 15B). By interconnecting the first two contacts (16A, 16B) and the second two contacts (17A, 17B), respectively, both spiral patterns are connected in parallel. The spiral patterns (12A, 12B), which are magnetically coupled, have identical electrical and magnetic properties. This leads to a reduction of eddy current losses at high frequencies. This results in a planar inductive component (11) which is suitable for high-frequency operation with a high maximum quality factor Q. The invention also relates to a planar transformer comprising two planar inductive components according to the invention. The first planar inductive component serves as the first winding of the planar transformer; the second planar inductive component serves as the second winding of the planar transformer. As a result of the above-mentioned reduction in eddy current losses at high frequencies, the planar transformer can suitable be used for high-frequency operation.
Public/Granted literature
- US20040240126A1 Planar inductive component and a planar transformer Public/Granted day:2004-12-02
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